Tile forming machine



Feb. 5, 1952 BRYANT 2,584,569

TILE FORMING MACHINE Filed Nov. 30, 1949 Patented Feb. 5, 1952 UNITED STATES PATENT OFFICE 2,584,669 TILEFORMING MACHINE Joseph A. Bryant, Lehigh, Iowa Application November 30, 1949, Serial No. 130,211

Claims.

This invention relates generally to tile forming machines and in particular to a formin machine for making elbow tile.

Elbow tile is commonly used in water and sewage systems. This tile is generally formed with about a ninety degree angle bend having a socket portion at one end. In forming the elbows by machines now in general use, appreciable length has been required in the elbow to obtain the ninety degree angle bend due to the construction of the forming dies. This length of the elbow is oftentimes objectionable in the installation of the elbow in a pipe system because of the additional space required in making a ninety degree angle connection. As a result, ninety degree elbows of short length are generally made by hand whereby their cost to the ultimate user is materially increased.

It is an object of this invention, therefore, to provide an improved forming machine for elbow tile.

A further object of this invention is to provide an elbow forming machine which is capable of making an elbow having a ninety degree turn within an over-all length much less than is now made by commercially available forming machines.

Another object of this invention is to provide a forming die for elbows of a construction such that short elbows can be manufactured on a production basis and as economically as long as elbows are now being manufactured.

A feature of this invention is found in the provision of an elbow forming machine having an outer die shell andan inner die member, in i which a separate portion of the outer die shell is integrally formed with the inner die member for movement therewith into and out of assembly relation with the outer die shell. On removal of the inner die member from the outer die shell, the opening in the outer die shell for receiving the separate outer die portion, provides a space through which the elbow being formed can be turned in its passage outwardly from the forming machine.

Another feature of this invention is found in the provision of an elbow forming machine in which an outer die shell has a cut-away portion, and with the portion removed from the cut-away portion, being rigidly mounted on an inner die member for movement therewith into and out of assembly relation with the outer die shell.

The removed portion, in such assembly. fits within the cut-away portion to completethe outer with recesses and ribs on the outer die shell to seal the junction zone between the removed portion and the outer die shell against the outward passage of issue. The removed portion is independently locked with the outer die shell against lateral movement relative thereto, and is releasably locked with the inner die member in assembly relation with the outer die shell.

Further objects, features and advantages of this invention will appear from the following description when taken in connection with the accompanying drawings, in which:

Fig. 1 is a fragmentary side elevational view of an elbow forming machine embodying the die construction of this invention, with certain parts being removed and other.parts being shown in section for the purpose of clarity;

Fig. 2 is an enlarged sectional view as seen along the line 22 in Fig. 1 showing the outer die shell and inner die member of the forming unit in assembly relation;

Fig. 3 is a transverse sectional view taken along the line 3-3 in Fig. 2 and ,Fig. 4 is an exploded perspective view of the elbow forming die unit of this invention.

With reference to the drawings, the die unit of this invention is illustrated in Fig. 1 in assembly relation with an elbow forming machine having an upright clay pot or cylinder [0 provided with an associated mud head or piston ll. Secured from the lower end 12 of the cylinder I0 is an outer die shell l3 of a flared shape converging inwardly toward its lower end and terminating in a tubular outlet portion [4. Extended transversely across the upper end of the outer die shell I3 is a spider'member [6 of an open construction having supported therefrom in a centrally located position a threadable stem I! for threadably engaging a sleeve or core bell IS. The lower end 20 of the core bell l8 (Fig. 2) projects within the outlet portion! in a concentrically spaced relation therewith.

Receivable within the outlet portion i4 is an inner die member, designated generally as l9, having a body member 2i of a substantially inverted cup shape integrally formed with a laterally extended annular flange 22 on its peripheral rim and with an upwardly projected annular wall 23 on its bottom or base portion 24. The annular wall 23 is of a size corresponding to the core bell I8 so that when the inner die member I9 is receiyed within the outlet portion M, in

' assembly relation with the outer die shell l3,

20 of the core bell I8 so as to constitute a down- 3 ward extension thereof. In this assembly the lateral flange 22 is received in close contact within the bottom end 26 of the outlet portion 14, so as to close such outlet.

The inner die member I9 is supported for movement into and out of assembly relation with the outer die shell l3 by the provision of means including a cross-head unit, indicated generally at '21; which is actuated forup and down movement by suitable means (not shown) and adapted to be locked against downward movement when the inner die member l9 within the outer die shell l3.

As thus far explained, the forming"ma"chine-* is of a commercially available type and in the forming of elbow tile and assuming the inner die member l3 in assembly relation within the i outer die shell l3, clay is forced from the cylinder It by the piston i l within the space 28to form the socket portion of the elbow. The inner die iiiifibf 5'9 is'theh dfo'pp'd" doiiihw'ardlyout' of meet-terms sliell' lit arid tliplston ll is moved gripped an tire is" the" elbowis formed tion" It. It is "s'en thereforej' that" theurvetu-re or" the ninety degre't' r'n'is qetermmeeey the length of the o'litletpoi ti'on'i t; Stated otherw e; the ben ing "arms" tile" to remi ninety v degreeangle turn mustte deiayed 'untilsufiicii en't the ends 32 thereof" diverging iriifa do wnward direction. outer die p'ortion 33; removes-in the process offorr'rii'ri'g'the cut-sway portion 3!,

is agree. secured asfbywlding'; indicated at at'ym'gs; 2 and o to'foh'e side or the "lateral flange 22011 the mne'rdie member; I ee1 ;,-epdsrtion opposite messes? member 2T. This outer die portion 33 of' an 'arcuate eontourfane arranged iii a cbhent'r ally' sptced relation" with apart of the eastern 34' of the cup sl'i'ap'ed body member?! The upperside is formed with a longitudinally extended rib '31 for reception within aerating-recessenemies in the Outer die Shell l3 the uppefs'idewan 35' of the cutaway' portion 31 asshowri' in 2 and 4. the outer die portion 33 are foime dwitlirecesses 4| for receiving tliereirias'sociat "ribsfiz'jforlrneii on the ehd'walls 43 of the cu't''awayportioh' 3|.

The tapered construction of: the'oute'rdie pob outer die portion 3'3'with' the Genet-parties l4,

to prevent the" outward'passag'e or issue'orclay from the assembled die unit; This coactir'ig assembly'relation'oi the'recesses and ribs functions further as" a; means for" locking the outer die portion ss'agsinsmasterei movement relative to" '3'; er the outer die portion 33 a In like manner; the" end fact-5S" 39" f the outlet portion 14. To further hold the outer die portion 33 against such lateral movement, there is provided on the portion 33 a pair of upright locking pins 4:6 having tapered upper ends 41 which are receivable within respective sockets 48 mounted on the outer die shell l3 at a position adjacent the upper or inner end of the outlet portion 14. Irr-orcler to assemble the inner die member l9 and outer dij portion '35? as a unit; relative to the outer die shell 13, and to releasably lock such unit in its assembly position, there is provided means inclpding a flat bar member 49 extended transversely of, and within the inverted cupshaped member 2|, at a position adjacent the peripheral flange 22 (Figs. 2 and '3). A locking marten indicated-generally as 50, includes a tubular body member 55 integrally formed with radially extended oppositely arranged pairs of bearing members 5| and. 52, with the members ngtlrtharithe 'iri'embers he" of albnge 52"for"a purposeto'apparflateri" 7 Carried on thef'top 'sideof'the tubular body member 5'5 is a flat sis-emitter 53%; a 'si z'e to bg'i'iida ceiv'edfwith'ijn' thrini'j por the inverted" cup shaiped" body* rflember 2 l to a esitimr cu that tli''fperiplieral flange? "of the" body 11 ember-2': is meatless-the tearingi'mfemtefstl an -52 The'gui'deb disc member 5 3jisio 1nied h a 'centerthrea'ded opening 56"fo1; threadab'ly receiving a pivot- -o'r bolt" mem er 5 which isjesgtfioed throughtlie v 'membemav The"'tubu1a*r body meme wss s rotatably mounted aboutastubffshaft 58 mounted en me'crossmeau 2i and the peeing member st is'rotatefd as new about thfshaiit 5'8 by "the 'provis ionof afmanually actuated handle or rater 6fis1iitab1y' secured 'to the-body portion 33 witiiin'the tioned i3 is completed by the reception of the p rtion 33Wilfhiii thedllt aw'aty 31 Concurrently with"this 'asseiriblyythe'lockirigmins re ne re- 'ce'ived: i'thi lannel-is at 5 r'eceivd 'ari'd the'ribs fi are there s sessar; I y of inneidie mer'nberlfi with hell; [3 is releasablyma intai 'd' by thfdev'r wee as" to rotate the 3- so rem-twee thein'rie'r ere-is t'o men-madame nnis of tli r'adial 51 ere rec d ivithin"'hook*meiiio f carriedin'oppos' el-y arr" ige'd "positions-on the outlet portion--14" he of" the lprojectioi'is 5 i wit the nooks oven-flecks th'inil'er' die member i9 aga i f downwardly o'ut'ofthieouter 315 sl'iell 'l 3, Witt? the Outer die portion '33 rigidly maintained in assembly relation wit t router" diesl"i'el 13' as iireidoi'ls lis described above. fthefso'ket'fioftioiiofthelbdtv lie pee 23,1; handlefi'fl ismanipuieieaset iie projectionstl from engagethe Fido-ks $1, aftei which theinnl' outer die portion 33 "a'1e ward during its extrusion through the space 29 about the lower end of the core bell l8. As a result, a sharper bend in the elbow is attained with the same facility as was previously afiorded in the manufacture of elbows having a much longer length and a greater bending radius. By virtue of this die construction, elbows have been formed which are as much as six inches shorter in length than previous machin formed elbows.

Although the invention has been described with respect to a preferred embodiment thereof, it is to be understood that it is not to be so limited since changes can be made therein which are within the full intended scope of this invention, as defined by the appended claims.

I claim:

1. A forming machine for making elbow tile having a socket portion at one end including an upright outer die shell with a reduced lower outlet portion of a tubular shape having a cutaway side portion, a movable inner socket forming die member movable axially into and out of said outlet portion and integrally formed with an outer die portion of a size and shape corresponding tosaid cut-away portion so as to be received in a mating relation therein, and means for releasably locking said inner die member within said outlet portion of the outer die shell.

2. A die unit for forming elbow tile including an outer die shell having a tubular outlet portion with a side portion thereof cut away, a movable inner die member movable axially into and out of said outlet portion including an outer die shell portion of a size and shape corresponding to said cut-away portion so as to be fitted within said cut-away portion to complete said outer die shell, when said inner die member is in a moved position therein, and means for releasably looking said inner die member against axial movement within said outer die shell.

3. A die unit for forming elbow tile including an outer die shell having an outlet of a tubular shape, a core bell supported in said shell in a concentrically spaced relation with said outlet, said outlet having a side portion thereof cut away, a movable inner die member movable axially into and out of said outlet having a core portion arranged relative to said core bell so as to constitute an extension of said core bell when in a moved position within said outlet, an outer die portion fixed on said inner die member and of a size and shape corresponding to said cutaway portion so as to be fitted within said cutaway portion to complete said outer die shell when said inner die member is within said outlet, coacting portions on the side wall of said 6 cut-away portion and on said outer die portion for sealing the adjoining surfaces therebetween, and means for releasably locking said inner die member within said outlet against axial move ment.

4. A die unit for forming elbow tile including an outer die shell with a movable outlet, an inner die member vertically movable into and out of said outlet, said outlet having a side portion thereof cut away, an outer die shell portion rigid on said inner die member and of a size and shape corresponding to said cut-away portion so as to fit in a mating relation within said cut away portion, when said inner die member is in a moved position within said outlet, to complete said outer die shell, coasting recesses and rib members on said outer die portion and on the side wall of said out-away portion for sealing the junction therebe'tween, means for releasably locking said outer die portion against lateral movement out of said cut-away portion, and means for releasably locking said inner die member against vertical movement within the outlet of said outer die shell.

5. A die unit for forming elbow tile including an outer die shell having an outlet, an inner die member vertically movable within said outlet to close the same, said outlet having a side portion thereof cut away, with said cut-away portion being of a substantially trapezoidal shape having the side walls thereof diverged toward the outer end of said outlet, an outer die portion rigid on said inner die member and of a size and shape corresponding to said cut-away portion so as to be fitted therein to complete said outer die shell when the inner die member is moved within said outlet, coacting means on said outlet and outer die portion for sealing the junction zone therebetween, means for locking said outer die portion against lateral movement relative to said outlet, and means for releasably locking said inner die member within said outer die shell.

JOSEPH A. BRYANT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 427,562 English May 13, 1890 738,913 Jones et a1 Sept. 15, 1903 FOREIGN PATENTS Number Country Date 20,005 Great Britain 1898 

